CHIPS & Systems, Inc.

Any device whose MAC address begins with 00:13:81 has a network interface built by CHIPS & Systems, Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:13:81

Organization

CHIPS & Systems, Inc.

Address

4750 Patrick Henry Drive Santa Clara California US 95054

Source

IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.